Aethue teedgold lawson



(No Model.)

A. T. LAWSON.

MAOHINE FOR SPINNING FLAX, 6w.

Patented Oct. 2, 1888.

N. PETERS. Phuto-Lilhngmphcn Washington. D. c.

ARTHUR TREDGOLD LAWVSON, OF LEEDS, COUNTY OF YORK, ENGLAND.

MACHINE FOR SPINNING FLAX, 84G.

SPECIFICATION forming part of Letters Patent No. 390,487, dated Qctober 2, 1888.

Application filed December 13, 1887. Serial No. 257,778. (No model.) Patented in England April 2. 1887, No. |,il61, and in France November 25, 1887, No. 187,198.

To all whom it may concern:

Be it known that I, ARTHUR TREDGOLD LAWSON, engineer, a subject of the Queen of Great Britain, residing at Hope Foundry,

Leeds, in the county of York, England, have invented certain new and useful Improvements in Machines for Spinning Flax, Hemp, and other Fibers, (for which I have received Letters Patent in Great Britain, No. 4,961, of April 2,1887, and in France, No. 187,198, of Novem her 25, 1887,) of which the following is a specifieation.

This invention relates to that class of spinning machinery in which the flier and bobbinholder are both driven each by a separate driving-band.

In this class of machines the flier, with its driving-pulley,is commonly fixed upon a tubular spindle which revolves in its hearing or bearings where the driving-pulley is situated. The bobbin-holder is at one end of a long tubular spindle,which can be traversed endwise to and fro through the flier-spindle and also revolved in it. A central fixed spindle is passed through the bobbinholder spindle and gives it support where it projects beyond the flierspindle. The opposite end of the bobbin holder spindle is connected to, but free to turn in, a slide, which can he slid to and fro along the fixed spindle by a neb on the slide being acted upon by a revolving screw which is formed and driven as in other spinning machinery, so as to traverse the bobbin-holder to and fro within the flier. The bobbin-holder spindle also passes through a short tubular spindle of the pulley which is to drive it. This short tubular spindle turns in one of the bearings before mentioned, which comes between it and the pulley which drives the flier. A feather projecting inward from the pulley spindle enters a slot formed along the bobbinholder spindle, so that the bobbin'holder spindle can he moved endwise through the pulley as well as be rotated by it. Parallel with the spindles above mentioned is a driving-shaft, on which are two band-pulleys,which, by endless bands, drive the flier-pulley and the bobbin-holder pulley. The pulley from which the flier is driven is fixed on the driving-shaft,

while the other pulley is loose upon it, but can be more or less tightly held thereto by a friction-eoupling.

The object of my invention is to provide inr proved means for increasingthe frictional holding between the driving-shaft and the loose pulley as yarn accumulates upon the bobbins. I use as heretofore a weight,which is progressively moved along a leverarm away from its axis. This movement I cause to be given to the weight by causing the slide which gives to-and-fro motion to the bobbin-holderto strike against a finger at one or the other end of its traverse, and by moving the finger cause a pawl to shift endwise a toothed rack,which is fixed to the weight, and so move the weight outward along the arm.

The weighted lever may be coupled by a conneotingrod to a lever, by which the loose pulley can be shifted endwise along the driving-shaft, and a friction-cone on the pulley be thereby pressed into a corresponding cone fixed on the shaft; or the lever may be made to act on a sleeve capable of sliding endwise along the driving-shaft, and the sleeve, when moved endwise, may cause draglevers carried by the fixed pulley to press more and more upon the circumference of a rim on the loose pulley, or other suitable forms of frictioncoupling may be used.

Figure 1 of the drawings hereunto annexed is a sectional elevation of machinery arranged as above described. Fig. 2 is a sectional ole vation of a modification of part of the same, and Fig. 3 an end view of the driving-pulley used in this modification.

A is the flier, carried by a hollow shaft, which turns in a bearing, B, and which has a drivingpulley, G, fixed to it.

D is the bobbin-holder on a long tubular spindle, D, which passes through the hollow shaft of the flier A. The long tubular spindle also passes through a hollow shaft, which turns in a bearing, E, and has a driving-pulley, F, fixed to it. A feather projects inward from the interior of the hollow shaft and enters a slot formed along the tubular spindle of the bobbin-holder.

G is a fixed spindle, which passes through the center of the tubular spindle of the bobbin-holder.

H is a slide to which the end of the tubular spindle is coupled in such a manner as to leave the spindle free to be revolved.

I is a neb on the under side of the slide, engaging with the thread of the traverse-screw J, which is driven in any ordinary manner, so as to traverse the bobbin-holder to and fro.

K is a driving shaft parallel with the spindle G.

L M are two bandpulleys mounted on this shaft, one, L, fast upon it, and the other, M, loose. From the fixed pulley L a band passes to the driving-pulley O of the flier, and from the loose pulley M a band to the pulley F, which drives the tubular spindle of the bobbin-holder.

N in Fig. 1 is a friction-cone fixed to the driving-shaft K.

O is a corresponding friction-eone on the pulley M.

P is a lever by which the pulley M can be moved endwise along the shaft, and the friction-cone upon it be made to engage with the friction-cone on the driving-shaft.

R is a spring, which acts to disengage the one friction-cone from the other.

S is a link .by which the upper end of the lever P is coupled to a short vertical arm of a lever, T. The longer arm of this lever is horizontal and carries a weight, U, which can he slid along it. To'slide the weight along the arm as the amount of yarn upon the bobbin inereases, the weight has a toothed rack extending from it, into which a pawl, V, car- .ried by an arm which rocks freely around the axis of the lever, is made to engage. The end of this arm is coupled to a rod which has a finger, XV, extending from it, and the slide H as it moves to and fro comes against this finger, and thereby moves the rod a distance endwise. A coiled spring, XV, brings the rod back again to its normal position when the slide H moves back away from it. In this way a to-and-fro motion is given to the pawl, and the pawl, engaging with the rack, moves the weight along the arm. As the'weight is so moved outward along the arm, the friction between the friction-cone O of the drivingpulley M and the cone N on the driving-shaft is increased, so increasing the driving-power of the pulley.

In the modified arrangement of frictioncoupling shown at- Figs. 2 and 3 the lever P is made to act upon a tubular sleeve, X, and to slide it endwise along the driving-shaft K. The sleeve is made to act upon levers Y, carried by the fast pulley L, and to cause friction-pads Y, carried by these levers, to press against the circumference of a cylindrical rim, Z, which projects from the side of the loose driving-pulley M, rotating upon the sleeve X.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is The combination, substantially as hereinbefore set forth, of the flier, its tubular shaft, the pulley-wheel thereon, the bobbin-holder, the tubular spindle on which it is mounted. which slides in the flier-shaft, the pulley F on the bobbin-holder shaft, the'fixed spindle G, which extends through the tubular spindle of the bobbin-holder, the driving-shaft, the fast and loose pulleys thereon, belt-gearing between the fast pulley and the pulley on the shaft of the flier, belt-gearing between the loose pulley and the pulley F on the bobbinholder shaft, the friction-clutch for making the loose pulley fast on the driving-shaft, the clutch-operating lever P, the bell-cranked lever T, the link S, connecting the bell-cranked lever to the clutchoperating lever, the adjustable weight U, the toothed rack extending from the weight, the pawl engaging with the teeth of the rack, the slide H on the bobbinholder spindle, a rod connected with the pawl V and carrying a finger, XV, which is struck by the slide H at each traverse, and the spring for returning the rod.

ARTHUR TREDGOLT) LAXVSON. \Vitnesscs:

HENRY S. LENTY, Gno. F. Moss, Clerks to T. &' H. Greenwood 'lcalc, Solicitors and Notaries Public, Leeds, England. 

